Compressor and electronic device using the same

ABSTRACT

The disclosure relates to a compressor including a compression cylinder configured to have a plurality of discharge ports for discharging compressed gas provided in a predetermined direction; and a plurality of discharge valves configured to be provided in the plurality of discharge ports to control an amount of discharged gas. The discharge valves include a valve neck configured to have one end fixed in a plate shape having elasticity and extend along an arrangement direction of the plurality of discharge ports from the one end; and a valve head configured to be provided at the other end of the valve neck to cover each of the discharge ports. According to the compressor of the disclosure, it is possible to manufacture the compressor compactly and reduce manufacturing and maintenance costs of the compressor by reducing the area occupied by the plurality of discharge valves.

TECHNICAL FIELD

The disclosure relates to an electronic device using a compressor suchas an air conditioner, a refrigerator, and a freezer, and moreparticularly, to a compressor having a plurality of discharge valvesapplied to multiple discharge ports.

BACKGROUND ART

A compressor refers to a mechanical device that increases pressure bycompressing gas, and is divided into a reciprocating type compressor anda rotary type compressor according to the operating principle. Thereciprocating type compressor is a type that converts a rotationalmotion of a motor into a linear reciprocating motion of a piston in acylinder through a crankshaft and a connecting rod to suck and compressgas. Examples of the rotary type compressor include a rotary compressorthat sucks and compresses gas while a roller rotates in a cylinder by arotational motion of a motor and a scroll compressor that continuouslysucks and compresses gas while a turning scroll performs an orbitalmotion in a certain direction from a center of a fixed scroll by arotational motion of a motor. The existing compressor has one dischargehole and a discharge valve optimized for an operating speed (rpm) of adisplacement amount in a cylinder.

A constant-speed type compressor needs to increase a size of a dischargehole in order to secure a flow rate of a discharge refrigerant andreduce a flow resistance. The enlargement of the size of the dischargehole increases a dead volume and a size of a discharge valve. Theincrease in the dead volume causes a decrease in cooling power, and theincrease in the size of the discharge valve increases the noise due tothe increase in the amount of impact, thereby reducing reliability.

In a variable type compressor, compression efficiency decreases when anoperating speed of a wide range exceeds a specific range where peakefficiency occurs. In consideration of the compression efficiency aspectof the variable compressor, it is advantageous to reduce the size of thedischarge hole in low-speed operation, but it is advantageous to enlargethe discharge hole in high-speed operation. As a result, theovercompression generation width increases according to the behavior ofthe discharge valve, so the compression efficiency decreases.

In order to solve the problems of the single discharge port and thedischarge valve, a compressor employing a plurality of discharge holesand discharge valves has been disclosed. However, such a plurality ofdischarge holes and discharge valves are an obstacle to the compactionof the compressor due to the increase in the occupied area. In addition,individually installing the plurality of discharge valves correspondingto the plurality of discharge holes causes not only an increase inmanufacturing cost but also inconvenience of maintenance.

DISCLOSURE Technical Problem

Accordingly, an object of the disclosure is to provide a compactcompressor and an electronic device using the same.

Accordingly, an object of the disclosure is to provide a compressorcapable of improving production cost, part management, and assemblingperformance, and an electronic device using the same.

Technical Solution

According to an aspect of the present disclosure, a compressor includes:a compression cylinder configured to have a plurality of discharge portsfor discharging compressed gas provided in a predetermined direction;and a plurality of discharge valves configured to be provided in theplurality of discharge ports to control an amount of discharged gas, inwhich each of the discharge valves includes: a valve neck configured tohave one end fixed in a plate shape having elasticity and extend alongan arrangement direction of the plurality of discharge ports from theone end; and a valve head configured to be provided at the other end ofthe valve neck to cover each of the discharge ports. According to thecompressor of the disclosure, it is possible to manufacture thecompressor compactly and reduce manufacturing and maintenance costs ofthe compressor by reducing the area occupied by the plurality ofdischarge valves.

The valve neck of at least one of the plurality of discharge valves maysurround and extend at least some of the other discharge valves, therebyreducing the area occupied by the plurality of discharge valves.

The plurality of discharge valves may be sequentially opened, therebypreventing the overcompression of gas.

The plurality of valve necks may be integrally fixedly supported, so theplurality of discharge valves may be configured integrally.

A valve stopper of the compressor that restricts deformation of theplurality of discharge valves may extend along an arrangement directionof the plurality of discharge ports to cover all of the plurality ofdischarge valves, thereby reducing the manufacturing and maintenancecosts.

A valve keeper of the compressor that restricts maximum deformation ofthe plurality of discharge valves may extend along the arrangementdirection of the plurality of discharge ports to cover all of theplurality of discharge valves, thereby reducing the manufacturing andmaintenance costs.

At least one of the plurality of discharge valves may be provided in theother discharge valves, thereby reducing the area occupied by theplurality of discharge valves.

The plurality of discharge ports may be arranged in a linear direction,and the plurality of discharge valves may extend in a straight linealong the linear direction, thereby reducing the area occupied by theplurality of discharge valves.

The plurality of discharge ports may be arranged in a circumferentialdirection of a predetermined curvature, and the plurality of dischargevalves may extend along the circumferential direction, thereby reducingthe area occupied by the plurality of discharge valves.

The plurality of discharge ports may have different diameters, therebyeasily controlling the discharge amount of gas.

According to another aspect of the disclosure, a compressor includes: acompression cylinder configured to have a plurality of discharge portsfor discharging compressed gas provided in a predetermined direction; aplurality of discharge valves configured to be provided in the pluralityof discharge ports; and a valve keeper configured to extend along thearrangement direction of the plurality of discharge ports to cover allof the plurality of discharge valves and prevent the plurality ofdischarge valves from being deformed.

According to still another aspect of the disclosure, a compressorincludes: a compression cylinder configured to have a cylinder thatforms a compression space for compressing gas and a valve plate that hasa plurality of discharge ports for discharging the compressed gasprovided in a predetermined direction; and a plurality of dischargevalves configured to have a plurality of valve heads that are providedin the plurality of discharge ports and a plurality of valve necks thatare perpendicular to the arrangement direction of the plurality ofdischarge ports in the plurality of valve heads and extend toward apoint on a line passing through centers of both outermost dischargeports, in which at least one of the plurality of valve necks extends togradually narrow toward the one point.

An angle between the two adjacent valve necks may be 15° or less.

A sum of inner diameters of the plurality of discharge ports may be 39%or less of an inner diameter of the cylinder.

There is provided an electronic device comprising a compressor, in whichthe compressor includes a compression cylinder configured to have aplurality of discharge ports for discharging compressed gas provided ina predetermined direction; and a plurality of discharge valvesconfigured to be provided in the plurality of discharge ports to controlan amount of discharged gas, and each of the discharge valves includes avalve neck configured to have one end fixed in a plate shape havingelasticity and extend along an arrangement direction of the plurality ofdischarge ports from the one end; and a valve head configured to beprovided at the other end of the valve neck to cover each of thedischarge ports.

Advantageous Effects

According to the disclosure, it is possible to provide the compactcompressor by reducing the occupied area of the plurality of dischargevalves while effectively controlling the discharge amount of thecompressed gas through the plurality of discharge ports and dischargevalves.

Further, in the compressor according to the discourse, since theplurality of discharge valves may be manufactured to be compact andintegral, it is possible to reduce the production cost and improve thepart management and assembly performance.

DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view illustrating a compressor according to afirst embodiment of the disclosure.

FIG. 2 is a perspective view of the compressor with a container removedfrom FIG. 1.

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2.

FIGS. 4 and 5 are schematic diagrams for explaining a gas compressionprocess in a cylinder block of a reciprocating type compressor.

FIG. 6 is an exploded perspective view illustrating a cylinder block inFIG. 2.

FIG. 7 is a plan view illustrating a discharge valve unit according to afirst embodiment of the disclosure.

FIG. 8 is a diagram illustrating an operating state of the dischargevalve unit according to the first embodiment of the disclosure.

FIG. 9 is a plan view illustrating a state in which the discharge valveunit of FIG. 7 is applied to a cylinder.

FIG. 10 is a graph illustrating a peak discharge pressure in a low speedoperation region.

FIG. 11 is a graph illustrating a peak discharge pressure in a mediumspeed operation region.

FIG. 12 is a graph illustrating a peak discharge pressure in a highspeed operation region.

FIG. 13 is a plan view illustrating a discharge valve unit according toa second embodiment of the disclosure.

FIG. 14 is a plan view illustrating a discharge valve unit according toa third embodiment of the disclosure.

FIG. 15 is a plan view illustrating a discharge valve unit of acompressor according to a fourth embodiment of the disclosure.

FIG. 16 is a plan view illustrating an inner diameter of a compressionspace of a cylinder of the disclosure and an inner diameter of aplurality of discharge ports.

MODE FOR DISCLOSURE

Hereinafter, in this document, a compressor 1 used in electronic devicessuch as an air conditioner, a refrigerator, and a freezer will bedescribed in detail with reference to the accompanying drawings.Embodiments described below describe a sealed reciprocating typecompressor 1 to aid understanding of the disclosure, which isillustrative. Unlike the embodiments described herein, it should beunderstood that various modifications such as a rotary type compressorand a scroll compressor may be implemented. However, when it is decidedthat a detailed description for the known functions or componentsrelated to the disclosure may obscure the gist of the disclosure, thedetailed description and concrete illustration will be omitted.

FIG. 1 is a perspective view illustrating a sealed reciprocating typecompressor 1 according to a first embodiment of the disclosure. Thesealed reciprocating type compressor 1 according to the first embodimentof the disclosure is accommodated in an inner space of a container 2 ina sealed state. The container 2 is configured by combining an uppercontainer 2-1 and a lower container 2-2 while accommodating thecompressor 1.

FIG. 2 is a perspective view illustrating the compressor 1 of FIG. 1,and FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2.

Referring to FIGS. 2 and 3, the compressor 1 includes a motor 10 and acylinder block 20.

The motor 10 includes a rotor 12, a stator 14 and a rotating shaft 16coupled to the rotor 12. The rotating shaft 16 includes a motor centralshaft part 16-1 and an eccentric shaft part 16-2. One end portion of aconnecting rod 18 is coupled to the eccentric shaft part 16-2. The otherend portion of the connecting rod 18 is coupled to a piston 22 insertedinto a compression space PS of the cylinder 21. The connecting rod 18converts a rotational motion of the rotor 12 into a linear reciprocatingmotion of the piston 22 disposed in the compression space PS.

The cylinder block 20 includes a cylinder 21 that has a cylindricalcompression space PS provided therein, a piston 22 that is inserted intothe compression space PS, a valve plate 23 that is provided on one sideof the cylinder 21, a gas suction part 24 that sucks gas, for example, arefrigerant from an outside, and a gas discharge part 25 that dischargesgas compressed in the cylinder 21.

FIGS. 4 and 5 are schematic diagrams for explaining a gas compressionprocess in the cylinder block 20 of the reciprocating type compressor 1.The cylinder block 20 is inserted into the cylindrical compression spacePS so that the piston 22 can reciprocate. A valve plate 23 is coupled toone side of the cylinder 21. The valve plate 23 includes a suction port232 that sucks gas and a discharge port 233 that discharges gas. Thevalve plate 23 includes a suction valve 32 that blocks the suction port232 on an inner surface of the compression space PS and a dischargevalve 44 that blocks the discharge port 233 on an outer surface of thecompression space PS. The suction valve 32 and the discharge valve 44are made of a plate material having elasticity. One side of the suctionvalve 32 and the discharge valve 44 is fixed and the other side thereofis a free end portion.

In FIG. 4, when the piston 22 retreats within the cylinder 21, thesuction valve 32, which is blocking the suction port 232 located on theinner surface of the valve plate 23, is elastically deformed and openedby suction force. As a result, gas is sucked through the suction port232 and fills the compression space PS. At this time, the dischargevalve 44 that blocks the discharge port 233 located on the outer surfaceof the valve plate 23 seals the discharge port 233 by the suction force.

In FIG. 5, when the piston 22 advances in the cylinder 21, the gas inthe compression space PS is compressed. Due to this compression force,the discharge valve 44 that is blocking the discharge port 233 locatedon the outer surface of the valve plate 23 is deformed and opened. As aresult, the gas is discharged to the gas discharge part 25 through thedischarge port 233. At this time, the suction valve 32 that blocks thesuction port 232 seals the suction port 232 by compression force.

FIG. 6 is an exploded perspective view illustrating the cylinder block20 of the compressor 1 according to an embodiment of the disclosure.

As illustrated in FIG. 6, the cylinder block 20 includes a cylinder 21that has the cylindrical compression space PS in a center thereof, thepiston 22 that is inserted into the compression space PS of the cylinder21, the valve plate 23 that is coupled to one surface of the cylinder21, the gas suction part 24 that sucks gas, and the gas discharge part25 that discharges gas. In addition, the cylinder block 20 includes asuction valve unit 30 that is disposed on the inner surface of thecylinder 21 side of the valve plate 23, a discharge valve unit 40 thatis at a position corresponding to three discharge ports 233, 234, and235 on the outer surface of the valve plate 23, a valve stopper 50 thatcovers the discharge valve unit 40, and a valve keeper 60 that coversthe valve stopper 50.

The cylinder 21 has a substantially hexahedral shape and has thecylindrical compression space PS penetrating through the center thereof.

The piston 22 is inserted into the cylindrical compression space PS ofthe cylinder 21 to reciprocate back and forth. The piston 22 isconnected to a connecting rod (18 in FIG. 3) at the rear of the cylinder21.

The valve plate 23 is coupled to the front of the cylinder 21. The valveplate 23 is provided with one suction port 232 and the first to thirddischarge ports 233, 234 and 235 that communicate with the compressionspace PS. The valve plate 23 includes a first bolt hole 236 that fastensa first bolt 66 and a second bolt hole 237 that fastens a second bolt67. The first bolt 66 fastens one end portion of the discharge valveunit 40, the valve stopper 50, and the valve keeper 60, respectively.The second bolt 67 is fastened to the second bolt hole 237 to fix theother end portion of the valve keeper 60.

The gas suction part 24 is a suction muffler 242 that reduces noisecaused by the suction of gas, and a gas suction pipe 244 that transfersthe gas passing through the suction muffler 242 to the suction port 232of the valve plate 23. The suction muffler 242 includes a plurality ofexpansion parts (not illustrated) provided therein and a connectionpassage (not illustrated) connecting between the plurality of expansionportions with a narrow width.

The gas discharge part 25 is coupled to the valve plate 23 with apredetermined space therein. The gas discharge part 25 includes anexhaust muffler (not illustrated) having a structure similar to theabove-described suction muffler 242 in a predetermined space.

The suction valve unit 30 is made of a plate material having elasticityof magnitude corresponding to one surface of the cylinder 21 and isprovided with a suction valve 32 and three discharge gas passage holes33, 34, and 35. The suction valve unit 30 has a valve head 322 thatblocks the suction port 232 of the valve plate 23 to be described later,and a valve neck 324 that integrally extends from the valve head 322.The valve neck 324 has the valve head 322 whose opposite end portion isintegrally connected to the plate-shaped suction valve unit 30. That is,the suction valve 32 may be formed in the plate-shaped suction valveunit 30 in a suction valve shape by a punching or shearing process.Obviously, the suction valve 32 may be separately manufactured insteadof the punching or shearing process, and fixedly installed on the valveplate 23.

The discharge valve unit 40 includes a fixed end portion 41 on one sidethereof and first to third discharge valves 42, 43, and 44 integrallyextending from the fixed end portion 41. The first to third dischargevalves 42, 43, and 44 open and close the first to third discharge ports233, 234, and 235 of the valve plate 23, respectively. One side of eachof the first to third discharge valves 42, 43, and 44 is fixed and theother side thereof is free. Accordingly, the first to third dischargevalves 42, 43, and 44 block the first to third discharge ports 233, 234,and 235, respectively, and then when the gas compression force of thecompression space PS reaches a predetermined range, each free end iselastically deformed and opens sequentially. The fixed end of thedischarge valve unit 40 is provided with a pair of first bolt passageholes 46 through which a pair of first bolts 66 passes. The first boltthrough hole 46 corresponds to the first bolt hole 236 of the valveplate 23.

The valve stopper 50 is disposed to cover the first to third dischargeports 233, 234, and 235. The valve stopper 50 includes a stopper body52, a fixed end portion 53 located at one end of the stopper body 52,and a free end portion 54 located at the other end thereof. The stopperbody 52 is bent upward at a predetermined angle from the fixed endportion 53 toward the free end portion 54. As a result, even if thefirst to third discharge valves 42, 43, and 44 are deformed, thedeformation of the first to third discharge valves 42, 43, and 44 islimited by the stopper body 52 of the valve stopper 50. The fixed endportion 53 of the valve stopper 50 is provided with a pair of secondbolt holes 56 which a pair of first bolts 66 passes through. The secondbolt through hole 56 corresponds to the first bolt through hole 46 ofthe discharge valve unit 40 and the first bolt hole 236 of the valveplate 23.

The valve keeper 60 is disposed to cover the valve stopper 50. The valvekeeper 60 includes a keeper body 62, a first fixed end portion 63located at one end of the keeper body 62, and a second fixed end portion64 located at the other end thereof. The keeper body 62 is bent to beupwardly inclined from a first fixed end portion 63 and then downwardlybent at the end. The valve keeper 60 restricts the valve stopper 50 frombeing deformed to a predetermined angle or more to prevent the first tothird discharge valves 42, 43, and 44 and the valve stopper 50 frombeing excessively deformed. A pair of first bolts 66 is fastened to thefirst fixed end portion 63. A second fixing bolt is fixed to the secondfixed end portion 64. The first fixing bolt 66 sequentially passesthrough the second bolt through hole 56 of the valve stopper 50 and thefirst bolt through hole 46 of the discharge valve unit 40, and then isfastened to the first bolt hole 236. The second fixing bolt 67 isfastened to the second bolt hole 237 of the valve plate 23.

FIG. 7 is a plan view illustrating the discharge valve unit 40 accordingto the first embodiment of the disclosure. As illustrated, the dischargevalve unit 40 includes the first to third discharge valves 42, 43, and44 disposed on the same plane. The first to third discharge valves 42,43, and 44 are integrally connected to the fixed end portion 41 of aunitary body. As the modified embodiment, the first to third dischargevalves 42, 43, and 44 may be provided with individual fixed endportions. The discharge valve unit 40 is not limited only to threedischarge valves, and may include two or four or more discharge valves.

The first discharge valve 42 includes a circular first valve head 422that covers the first discharge port 233 of the valve plate 23 and afirst valve neck 423 that branches into two from the first valve head422 with a first space 45 therebetween and extends to the fixed endportion 41.

The second discharge valve 43 is accommodated in the first space part45. The second discharge valve 43 includes a circular second valve head432 that covers the second discharge port 234 of the valve plate 23 anda second valve neck 433 that branches into two from the second valvehead 432 with a second space 48 therebetween and extends to the fixedend portion 41.

The third discharge valve 44 is accommodated in the second space part48. The third discharge valve 44 includes a circular third valve head442 that covers the third discharge port 235 of the valve plate 23 and athird valve neck 443 that extends in a straight line from the thirdvalve head 442 to the fixed end portion 41.

As described above, the first valve neck 423 of the first dischargevalve 42 extends surrounding the second discharge valve 43, and thesecond valve neck 433 of the second discharge valve 43 extendssurrounding the third discharge valve 44.

The first to third discharge valves 42, 43, and 44 are not limited onlyto the shape illustrated in FIG. 7, but various modifications may bemade within the scope of the disclosure. For example, the firstdischarge valve 42 may accommodate the second discharge valve 43 in thesame plane, and the third discharge valve 44 may be designed to beseparated from the first and second discharge valves 42 and 43.

FIG. 8 is a view illustrating an open state of the first to thirddischarge valves 42, 43, and 44. As illustrated, the first dischargevalve 42, the second discharge valve 43, and the third discharge valve44 are sequentially opened to a height of about 2.7 mm, a height ofabout 1.6 mm, and a height of about 0.7 mm. As such, the first to thirddischarge valves 42, 43, and 44 may be sequentially opened due to adifference in rigidity due to different lengths of the first to thirdvalve necks 423, 433, and 443. That is, the first valve neck 423 havingthe longest length, the second valve neck 433 having the intermediatelength, and the third valve neck 443 having the shortest length may besequentially opened. Obviously, each of the above-described dischargevalves 42, 43, and 44 is an example, and an opening height may beadjusted by adjusting the rigidity by designing different lengths orwidths.

Hereinafter, the operation of the discharge valve unit 40 according tothe first embodiment of the disclosure will be described with referenceto FIG. 9. As illustrated, the first to third discharge ports 233, 234,and 235 are arranged in a vertical linear direction in the compressionspace PS of the cylinder 21. In the discharge valve unit 40, the firstto third valve heads 422, 432, and 442 cover the first to thirddischarge ports 233, 234, and 235, respectively. In addition, the firstto third valve necks 423, 433, and 443 extend along the arrangementdirection of the first to third discharge ports 233, 234, and 235, thatis, in the vertical linear direction. At this time, the first to thirdvalve necks 423, 433, and 443 have a shape surrounding the circularvalve heads 422, 432, and 442 in a circular curve.

The first to third discharge valves 42, 43, and 44 are sequentiallyopened in order of less rigidity when the pressure inside the cylinderrises above a certain level. When the motor is operated at a low speed,for example, 1,450 rpm, the first discharge valve 42 with low rigiditydue to the relatively low internal pressure of the cylinder opens firstand larger, and the second discharge valve 43 in the middle is openedlater and smaller than the first discharge valve 42, and the opening ofthe third discharge valve 44 having the relatively highest rigidity isrestricted. On the other hand, when the motor is operated at a highspeed, for example, 3,700 rpm, the opening amount of the third dischargevalve 44 having high rigidity due to a relatively high internal pressureof the cylinder may be increased.

According to the characteristics of the disclosure, the first to thirddischarge valves 42, 43 and 44 may perform the following roles.

The first discharge valve 42 serves to reduce the peak pressure andimprove an input of low rpm together with the second discharge valve 43.

The second discharge valve 43 serves to naturally connect the valveopening/closing delay of the first and third discharge valves 42 and 44.In addition, the second discharge valve 43 reduces the peak pressuretogether with the first discharge valve 42 and is limited in opening ata relatively low pressure at a low rpm, thereby optimizing theefficiency of the first discharge valve.

The third discharge valve 44 may affect the occurrence and period ofpressure peaks and prevent a decrease in cooling power due to low valvestiffness at high rpm, and the opening is limited for a relatively lowpressure at a low rpm, so the first and second discharge valves 42 and43 may optimize compression efficiency.

Table 1 below shows the peak discharge pressure generated by theoperation area of the compressor, and FIGS. 10 to 12 each are graphsillustrating the peak discharge pressure according to the change in thevolume (cm³) of the compression space PS of the cylinder 21 at the lowspeed, the medium speed, and the high speed operation.

TABLE 1 rpm 1,450 1,850 3,700 Prior art (kgf/cm²) 6.8 7.0 8.4 Thedisclosure (kgf/cm²) 6.3 6.4 7.6 Improvement rate (%) 7.0 ↓ 8.6 ↓ 9.5 ↓

In FIG. 10, when the compression space PS of the cylinder 21 iscompressed at 1,450 rpm, the first discharge valve 42 of the disclosurestarts to open, the second discharge valve 43 is sequentially opened,and the third discharge valve 44 is restricted from opening. A maximumpeak discharge pressure is improved by about 7.0% compared to the priorart. In FIG. 11, when the compression space PS of the cylinder 21 iscompressed at 1,850 rpm, the first discharge valve 42 of the disclosurestarts to open, the second discharge valve 43 and the third dischargevalve 44 are sequentially opened. At this time, the maximum peakdischarge pressure is improved by about 8.6% compared to the prior art.In FIG. 12, when the compression space PS of the cylinder 21 iscompressed at 3,700 rpm, the first discharge valve 42 of the disclosurestarts to open, the second discharge valve 43 and the third dischargevalve 44 are sequentially opened. At this time, the maximum peakdischarge pressure is improved by about 9.5% compared to the prior art.

As described above, since the compressor 1 to which the plurality ofdischarge ports 233, 234, and 235 are applied may be designed to have arelatively smaller inner diameter of each discharge port 233, 234, and235 than the conventional compressor using one discharge port, it ispossible to equally or additionally secure the flow rate of thedischarged gas and minimize the flow resistance.

In addition, when the size of the plurality of discharge ports 233, 234,and 235 is reduced, the size of the corresponding plurality of dischargevalves 42, 43, and 44 may also be reduced, so the impact when thedischarge valves 42, 43, and 44 are opened or closed may be reduced,thereby improving the reliability and the noise problem.

In addition, the plurality of discharge valves 42, 43, and 44 are eachsequentially opened and closed due to different stiffness, and as aresult, it is possible to improve the compression efficiency byimproving the overcompression of gas. Such sequential opening andclosing may be controlled by differently designing the sizes of theinner diameters of each of the plurality of discharge ports 233, 234,and 235, the widths of each of the valve necks, and the lengths of thevalve necks.

In addition, the first to third valve necks 423, 433, and 443 extendalong the arrangement direction of the plurality of discharge ports 233,234, and 235, thereby narrowing the spacing of the plurality ofdischarge ports 233, 234, and 235.

The plurality of discharge valves 42, 43, and 44 have the same number ofvalves as the plurality of discharge ports 233, 234, and 235, but may beintegrally formed. In this way, when the plurality of discharge valves42, 43, and 44 are integrally manufactured, it is possible to improvethe production cost, the part management, and the assembly performance.

In addition, since the plurality of discharge valves 42, 43, and 44operate in the same direction as the straight line connecting the centerlines of the plurality of discharge valves 42, 43, and 44 and aremanufactured integrally, the plurality of discharge valves 42, 43, and44 may occupy the minimum space, and thus the compact design may beimplemented, thereby further increasing the rigidity difference betweenthe discharge valves within a limited space.

FIG. 13 is a plan view illustrating a discharge valve unit 40 accordingto a second embodiment of the disclosure. As illustrated, the dischargevalve unit 40 includes the first to third discharge valves 42, 43, and44 disposed on the same plane. The first to third discharge valves 42,43, and 44 are integrally connected to the fixed end portion 41 of aunitary body.

The first to third discharge ports 233, 234, and 235 are arranged in thevertical linear direction in the compression space PS of the cylinder21. In the discharge valve unit 40, the first to third valve heads 422,432, and 442 cover the first to third discharge ports 233, 234, and 235,respectively. In addition, the first to third valve necks 423, 433, and443 extend along the arrangement direction of the first to thirddischarge ports 233, 234, and 235, that is, in the vertical lineardirection.

The first discharge valve 42 includes a quadrangular first valve head422 that covers the first discharge port 233 of the valve plate 23 and alinear first valve neck 423 that branches into two from the first valvehead 422 with a first space therebetween and extends to the fixed endportion 41. The first discharge valve 42 accommodates the seconddischarge valve 43 and the third discharge valve 44 on the same plane ina predetermined first space.

The second discharge valve 43 is accommodated in the first space in thefirst discharge valve 42. The second discharge valve 43 includes aquadrangular second valve head 432 that covers the second discharge port234 of the valve plate 23 and a second valve neck 433 that branches intotwo from the second valve head 432 with a second space therebetween andextends to the fixed end portion 41. The second discharge valve 43accommodates the third discharge valve 44 on the same plane.

The third discharge valve 44 is accommodated in the second space. Thethird discharge valve 44 includes a quadrangular third valve head 442that covers the third discharge port 235 of the valve plate 23 and athird valve neck 443 that extends in a straight line from the thirdvalve head 442 to the fixed end portion 41.

As described above, in the discharge valve unit 40 according to thesecond embodiment of the disclosure, the first to third valve necks 423,433, and 443 may extend along the arrangement direction of the pluralityof discharge ports 233, 234, and 235, thereby narrowing the spacing ofthe plurality of discharge ports 233, 234, and 235.

FIG. 14 is a plan view illustrating the discharge valve unit 40according to a third embodiment of the disclosure. As illustrated, thedischarge valve unit 40 includes the first to third discharge valves 42,43, and 44 disposed on the same plane. The first to third dischargevalves 42, 43, and 44 are integrally connected to the fixed end portion41 of a unitary body.

The first to third discharge ports 233, 234, and 235 are arranged in thecircumferential direction in the compression space PS of the cylinder21. In the discharge valve unit 40, the first to third valve heads 422,432, and 442 cover the first to third discharge ports 233, 234, and 235,respectively. In addition, the first to third valve necks 423, 433, and443 extend along the arrangement direction of the first to thirddischarge ports 233, 234, and 235, that is, in the circumferentialdirection.

The first discharge valve 42 includes a first valve head 422 that coversthe first discharge port 233 of the valve plate 23 and a curved firstvalve neck 423 that branches into two from the first valve head 422 witha first space therebetween and extends to the fixed end portion 41. Thefirst discharge valve 42 accommodates the second discharge valve 43 andthe third discharge valve 44 on the same plane in a predetermined firstspace.

The second discharge valve 43 is accommodated in the first space in thefirst discharge valve 42. The second discharge valve 43 includes asecond valve head 432 that covers the second discharge port 234 of thevalve plate 23 and a curved second valve neck 433 that branches into twofrom the second valve head 432 with a second space therebetween andextends to the fixed end portion 41. The second discharge valve 43accommodates the third discharge valve 44 on the same plane.

The third discharge valve 44 is accommodated in the second space. Thethird discharge valve 44 includes a third valve head 442 that covers thethird discharge port 235 of the valve plate 23 and a curved third valveneck 443 that extends from the third valve head 442 toward the fixed endportion 41.

As described above, in the discharge valve unit 40 according to thethird embodiment of the disclosure, the first to third valve necks 423,433, and 443 may extend along the arrangement direction of the pluralityof discharge ports 233, 234, and 235, thereby narrowing the spacing ofthe plurality of discharge ports 233, 234, and 235.

FIG. 15 is a plan view illustrating a discharge valve unit 40 accordingto a fourth embodiment of the disclosure. As illustrated, the dischargevalve unit 40 includes the first to third discharge valves 42, 43, and44 disposed on the same plane. The first to third discharge valves 42,43, and 44 are integrally connected to the fixed end portion 41 of aunitary body.

The first to third discharge ports 233, 234, and 235 are arranged in thevertical linear direction in the compression space PS of the cylinder21. In the discharge valve unit 40, the first to third valve heads 422,432, and 442 cover the first to third discharge ports 233, 234, and 235,respectively. In addition, the first to third valve necks 423, 433, and443 are perpendicular to a straight line A passing through the center ofthe first to third discharge ports 233, 234, and 235 and extends towarda point P on a straight line B passing through the center of the seconddischarge port 234.

The first discharge valve 42 includes a quadrangular first valve head422 that covers the third discharge port 233 of the valve plate 23 and afirst valve neck 423 that extends so that a width thereof graduallydecreases from the first valve head 422 toward the point P.

The second discharge valve 43 includes a quadrangular second valve head432 that covers the second discharge port 234 of the valve plate 23 anda second valve neck 433 extends so that a width thereof graduallydecreases from the second valve head 432 toward the point P.

The third discharge valve 44 includes a quadrangular third valve head442 that covers the third discharge port 235 of the valve plate 23 and athird valve neck 443 that extends so that a width thereof graduallydecreases from the third valve head 442 toward the point P.

As described above, in the discharge valve unit 40 according to thefourth embodiment of the disclosure, the first to third valve necks 423,433, and 443 extend so that the width thereof decreases toward one pointP, and as a result, the plurality of discharge ports 233, 234, and 235can be arranged very close to each other so that an angle (a)therebetween is 15° or less.

FIG. 16 is a plan view illustrating an inner diameter Sr of the cylinderof the disclosure and inner diameters V1 r, V2 r, and V3 r of the firstto third discharge ports 233, 234, and 235. The sum of the innerdiameters V1 r, V2 r, and V3 r of the first to third discharge ports233, 234, 235 is preferably 39% or less of the inner diameter Sr of thecylinder. If the sum of the inner diameters exceeds 39%, theinterference between the adjacent discharge ports occurs and thecompression efficiency decreases.

Each inner diameter V1 r, V2 r, and V3 r of the first to third dischargeports 233, 234, and 235 may be set variously within a range of 39% orless of the inner diameter Sr of the cylinder, and may all be setequally to, for example, 13%, and may be all set differently.

As described above, according to an aspect of the present disclosureregarding to a compressor including a compression cylinder configured tohave a plurality of discharge ports for discharging compressed gasprovided in a predetermined direction and a plurality of dischargevalves configured to be provided in the plurality of discharge ports tocontrol an amount of discharged gas, in which each of the dischargevalves includes a valve neck configured to have one end fixed in a plateshape having elasticity and extend along an arrangement direction of theplurality of discharge ports from the one end and a valve headconfigured to be provided at the other end of the valve neck to covereach of the discharge ports, it is possible to manufacture thecompressor compactly and reduce manufacturing and maintenance costs ofthe compressor by reducing the area occupied by the plurality ofdischarge valves.

Also, the valve neck of at least one of the plurality of dischargevalves may surround and extend at least some of the other dischargevalves, thereby reducing the area occupied by the plurality of dischargevalves, the plurality of discharge valves may be sequentially opened,thereby preventing the overcompression of gas, and the plurality ofvalve necks may be integrally fixedly supported, so the plurality ofdischarge valves may be configured integrally.

Also, a valve stopper of the compressor that restricts deformation ofthe plurality of discharge valves may extend along an arrangementdirection of the plurality of discharge ports to cover all of theplurality of discharge valves, and a valve keeper of the compressor thatrestricts maximum deformation of the plurality of discharge valves mayextend along the arrangement direction of the plurality of dischargeports to cover all of the plurality of discharge valves, therebyreducing the manufacturing and maintenance costs.

Also, at least one of the plurality of discharge valves may be providedin the other discharge valves, and the plurality of discharge ports maybe arranged in a linear direction, and the plurality of discharge valvesmay extend in a straight line along the linear direction, therebyreducing the area occupied by the plurality of discharge valves.

Also, the plurality of discharge ports may be arranged in acircumferential direction of a predetermined curvature, and theplurality of discharge valves may extend along the circumferentialdirection, thereby reducing the area occupied by the plurality ofdischarge valves, and the plurality of discharge ports may havedifferent diameters, thereby easily controlling the discharge amount ofgas.

Although the preferred embodiments of the disclosure have beenillustrated and described above, the disclosure is not limited to thespecific embodiments described above, and can be variously modified bythose skilled in the art to which the disclosure pertains withoutdeparting from the gist of the disclosure claimed in the claims, andthese modifications should not be understood individually from thetechnical ideas or prospects of the disclosure.

1. A compressor, comprising: a compression cylinder configured to have aplurality of discharge ports for discharging compressed gas provided ina predetermined direction; and a plurality of discharge valvesconfigured to be provided in the plurality of discharge ports to controlan amount of discharged gas, wherein each of the discharge valvesincludes: a valve neck configured to have one end fixed in a plate shapehaving elasticity and extend along an arrangement direction of theplurality of discharge ports from the one end; and a valve headconfigured to be provided at the other end of the valve neck to covereach of the discharge ports.
 2. The compressor of claim 1, wherein thevalve neck of at least one of the plurality of discharge valvessurrounds and extends at least some of the other discharge valves. 3.The compressor of claim 1, wherein the plurality of discharge valves aresequentially opened.
 4. The compressor of claim 1, wherein the pluralityof valve necks are integrally fixedly supported.
 5. The compressor ofclaim 1, further comprising: a valve stopper configured to extend alongthe arrangement direction of the plurality of discharge ports to coverall of the plurality of discharge valves and restrict opening andclosing of the plurality of discharge valves.
 6. The compressor of claim1, further comprising: a valve keeper configured to extend along thearrangement direction of the plurality of discharge ports to cover allof the plurality of discharge valves and prevent the plurality ofdischarge valves from being deformed.
 7. The compressor of claim 1,wherein at least one of the plurality of discharge valves is provided inthe other discharge valves.
 8. The compressor of claim 1, wherein theplurality of discharge ports are arranged in a linear direction, and theplurality of discharge valves extend in a straight line along the lineardirection.
 9. The compressor of claim 1, wherein the plurality ofdischarge ports are arranged in a circumferential direction of apredetermined curvature, and the plurality of discharge valves extendalong the circumferential direction.
 10. The compressor of claim 1,wherein the plurality of discharge ports have different diameters.
 11. Acompressor, comprising: a compression cylinder configured to have aplurality of discharge ports for discharging compressed gas provided ina predetermined direction; a plurality of discharge valves configured tobe provided in the plurality of discharge ports; and a valve keeperconfigured to extend along the arrangement direction of the plurality ofdischarge ports to cover all of the plurality of discharge valves andprevent the plurality of discharge valves from being deformed.
 12. Acompressor, comprising: a compression cylinder configured to have acylinder that forms a compression space for compressing gas and a valveplate that has a plurality of discharge ports for discharging thecompressed gas provided in a predetermined direction; and a plurality ofdischarge valves configured to have a plurality of valve heads that areprovided in the plurality of discharge ports and a plurality of valvenecks that are perpendicular to the arrangement direction of theplurality of discharge ports in the plurality of valve heads and extendtoward a point on a line passing through centers of both outermostdischarge ports, wherein at least one of the plurality of valve necksextends to gradually narrow toward the one point.
 13. The compressor ofclaim 12, wherein an angle between the two adjacent valve necks is 15°or less.
 14. The compressor of claim 12, wherein a sum of innerdiameters of the plurality of discharge ports is 39% or less of an innerdiameter of the cylinder.
 15. An electronic device comprising acompressor, wherein the compressor includes: a compression cylinderconfigured to have a plurality of discharge ports for dischargingcompressed gas provided in a predetermined direction; and a plurality ofdischarge valves configured to be provided in the plurality of dischargeports to control an amount of discharged gas, and each of the dischargevalves includes: a valve neck configured to have one end fixed in aplate shape having elasticity and extend along an arrangement directionof the plurality of discharge ports from the one end; and a valve headconfigured to be provided at the other end of the valve neck to covereach of the discharge ports.